
Watts Premier (105311) RO PURE Sediment Filter
RO PURE Sediment Filter (105311)
The Watts Premier 105311 is a stage-one sediment filter designed for the RO PURE (RO-4) and Filter-Pure (UF3) systems. Its 5-micron meltblown polypropylene media traps dirt, silt, rust, and particulate matter before they reach your membrane or downstream filters.
This filter removes suspended particles down to 5 microns—roughly the size of milled flour. It protects downstream filters and membranes from clogging, extends system life, and improves water clarity and taste. Rated for 1350 gallons or six months of typical household use, whichever comes first.
| Model Number | 105311 (F531411) |
| Filtration Rating | 5 micron |
| Media Type | Meltblown polypropylene |
| Dimensions | 11" H × 2" W × 2" D |
| Service Life | 6 months or 1350 gallons |
| Replacement Stage | Stage 1 |
This filter is designed exclusively for the Watts Premier RO PURE (RO-4) reverse osmosis system and the Filter-Pure (UF3) filtration system. It uses a proprietary housing design and will not fit the Watts 1/4 Turn KWIK Change filter systems or standard 10-inch housings.
RO PURE Sediment Filter (105311)
The Watts Premier 105311 is a stage-one sediment filter designed for the RO PURE (RO-4) and Filter-Pure (UF3) systems. Its 5-micron meltblown polypropylene media traps dirt, silt, rust, and particulate matter before they reach your membrane or downstream filters.
This filter removes suspended particles down to 5 microns—roughly the size of milled flour. It protects downstream filters and membranes from clogging, extends system life, and improves water clarity and taste. Rated for 1350 gallons or six months of typical household use, whichever comes first.
| Model Number | 105311 (F531411) |
| Filtration Rating | 5 micron |
| Media Type | Meltblown polypropylene |
| Dimensions | 11" H × 2" W × 2" D |
| Service Life | 6 months or 1350 gallons |
| Replacement Stage | Stage 1 |
This filter is designed exclusively for the Watts Premier RO PURE (RO-4) reverse osmosis system and the Filter-Pure (UF3) filtration system. It uses a proprietary housing design and will not fit the Watts 1/4 Turn KWIK Change filter systems or standard 10-inch housings.
Original: $22.75
-65%$22.75
$7.96Description
RO PURE Sediment Filter (105311)
The Watts Premier 105311 is a stage-one sediment filter designed for the RO PURE (RO-4) and Filter-Pure (UF3) systems. Its 5-micron meltblown polypropylene media traps dirt, silt, rust, and particulate matter before they reach your membrane or downstream filters.
This filter removes suspended particles down to 5 microns—roughly the size of milled flour. It protects downstream filters and membranes from clogging, extends system life, and improves water clarity and taste. Rated for 1350 gallons or six months of typical household use, whichever comes first.
| Model Number | 105311 (F531411) |
| Filtration Rating | 5 micron |
| Media Type | Meltblown polypropylene |
| Dimensions | 11" H × 2" W × 2" D |
| Service Life | 6 months or 1350 gallons |
| Replacement Stage | Stage 1 |
This filter is designed exclusively for the Watts Premier RO PURE (RO-4) reverse osmosis system and the Filter-Pure (UF3) filtration system. It uses a proprietary housing design and will not fit the Watts 1/4 Turn KWIK Change filter systems or standard 10-inch housings.





